Driving forward is a lot easier than driving in reverse.
In reverse, you can't see as clearly, you take the chance of running over something or hitting something head-on.
If the gear is in park, that means sitting still, not moving at all, not forward or backward.
As in my life, it doesn't get me anywhere constructive to look backward or live in the past and it sure doesn't get me anywhere to sit still and be stuck in the present even though I believe that living in the present is the healthy thing to do. But when I live in the present, it is healthy to be actively living there, to participate and BE present. When I do that, I am actually driving forward, seeing the road clearly and making wise decisions. I might have to stop once in awhile to clean the windshield and get focused again, and then the wheels begin rolling again in this earthly vehicle I call my life.